Detections
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Oracle Linux 7 / 8 : Unbreakable Enterprise kernel-container (ELSA-2021-9221)

high Nessus Plugin ID 149356

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Synopsis

The remote Oracle Linux host is missing one or more security updates.

Description

The remote Oracle Linux 7 / 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2021-9221 advisory.

 - Revert 'x86/vmlinux: Use INT3 instead of NOP for linker fill bytes' (John Donnelly) [Orabug: 32576398] {CVE-2021-3411}
 - netfilter: x_tables: Use correct memory barriers. (Mark Tomlinson) [Orabug: 32709120] {CVE-2021-29650}
 - perf/x86/intel: Fix a crash caused by zero PEBS status (Kan Liang) [Orabug: 32669468] {CVE-2021-28971}
 - btrfs: fix race when cloning extent buffer during rewind of an old root (Filipe Manana) [Orabug:
 32669450] {CVE-2021-28964}
 - vhost-vdpa: set v->config_ctx to NULL if eventfd_ctx_fdget() fails (Stefano Garzarella) [Orabug:
 32696005] {CVE-2021-29266}
 - vhost-vdpa: fix use-after-free of v->config_ctx (Stefano Garzarella) [Orabug: 32696005] {CVE-2021-29266}
 - fuse: fix live lock in fuse_iget() (Amir Goldstein) [Orabug: 32669269] {CVE-2021-28950}
 - fuse: fix bad inode (Miklos Szeredi) [Orabug: 32669269] {CVE-2021-28950}
 - Xen/gnttab: handle p2m update errors on a per-slot basis (Jan Beulich) [Orabug: 32651473] {CVE-2021-28038}
 - xen-blkback: don't leak persistent grants from xen_blkbk_map() (Jan Beulich) [Orabug: 32697850] {CVE-2021-28688}

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected kernel-uek-container and / or kernel-uek-container-debug packages.

See Also

https://linux.oracle.com/errata/ELSA-2021-9221.html

Plugin Details

Severity: High

ID: 149356

File Name: oraclelinux_ELSA-2021-9221.nasl

Version: 1.6

Type: local

Agent: unix

Published: 5/10/2021

Updated: 10/22/2024

Supported Sensors: Continuous Assessment, Frictionless Assessment Agent, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.6

Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2021-29266

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:oracle:linux:kernel-uek-container, p-cpe:/a:oracle:linux:kernel-uek-container-debug, cpe:/o:oracle:linux:7, cpe:/o:oracle:linux:8

Required KB Items: Host/OracleLinux, Host/RedHat/release, Host/RedHat/rpm-list, Host/local_checks_enabled

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 6/1/2021

Vulnerability Publication Date: 3/5/2021

Reference Information

CVE: CVE-2021-28038, CVE-2021-28688, CVE-2021-28950, CVE-2021-28964, CVE-2021-28971, CVE-2021-29266, CVE-2021-29650, CVE-2021-3411